Statement Of Changes In Equity [Abstract]

BioGaia - Filing #702781

Concept	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	196 273 SEK	1 154 008 SEK	—	1 877 367 SEK	—	—	—	1 877 365 SEK	2,000 SEK	—	27,000 SEK	20 196 SEK	—	506 915 SEK	—	—	2,000 SEK	1 149 483 SEK	1 746 243 SEK	20 196 SEK	398 855 SEK	179 730 SEK	2 021 SEK	—	—	1 746 245 SEK	—	—	—	—	507 872 SEK	2,000 SEK	2 038 SEK	21 831 SEK	507 874 SEK	17 336 SEK	279 320 SEK	187 347 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	—	196 273 SEK	—	—	196 273 SEK	—	—	—	—	—	—	—	—	196 273 SEK	179 730 SEK	—	—	—	—	—	—	—	—	—	—	—	—	179 730 SEK	179 370 SEK	—	—	—	—	—	—	—	—
Comprehensive income	0 SEK	—	—	198 267 SEK	—	0 SEK	196 273 SEK	1 994 SEK	—	—	0 SEK	—	—	0 SEK	—	198 267 SEK	175 671 SEK	—	—	—	—	—	—	—	0 SEK	0 SEK	—	4 059 SEK	0 SEK	179 730 SEK	175 671 SEK	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	—	68 870 SEK	—	68 870 SEK	—	—	—	—	—	—	—	—	—	68 870 SEK	65 012 SEK	—	—	—	—	—	—	—	—	—	—	—	65 012 SEK	—	65 012 SEK	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	—	4 525 SEK	—	—	—	—	—	—	—	—	—	4 525 SEK	—	4 525 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—